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Question1: Regression - What factors predict duration of dyspnea in elders with heart failure?

Note: gender is coded 0 = male, 1 = female [Clue: To answer this question, examine the coefficients table]

Descriptive statistics

 

mean

Std. Deviation

N

dysLN

4.0562

1.84562

66

HFSPSTOT

20.32

8.64

66

Age

76.12

7.796

66

gender_dummy

0.5

0.504

66

 

Correlations

 

dysLN

HFSPSTOT

Age

gender dummy

pearson

dysLN

1

0.304

0.034

0.22

 

HFSPSTOT

0.304

1

-0.112

-0.037

 

Age

0.034

-0.112

1

-0.341

 

gender dummy

0.22

-0.037

-0.341

1

Sig(1- tailed)

dysLN

-

0.007

0.394

0.038

 

HFSPSTOT

0.007

-

0.185

0.384

 

Age

0.394

0.185

'-

0.003

 

gender dummy

0.038

0.384

0.003

'-

N

dysLN

66

66

66

66

 

HFSPSTOT

66

66

66

66

 

Age

66

66

66

66

 

gender dummy

66

66

66

66

 

Variables Entered/ Removed

Model

variables entered

variables removed

method

1

Gender_dumy, HFSPSTOT, Age

-

Enter

  1. All requested variables entered
  2. Dependent variable : dysLN

Model summary

Model summary

R

R square

Adjusted R square

Std error of the estimate

1

0.414a

0.171

0.131

1.72052

1.        Predictors: ( constant), gender_dummy, HFSPSTOT, age

ANOVA b

Model

Sum of squares 

df

mean square

F

Sig

regression

37.878

3

12.626

4.265

0.008 a

residual

183.531

62

2.96

 

 

total

221.409

65

 

 

 

1.        Predictors: ( constant), gender_dummy, HFSPSTOT, age

2.        Dependent variable : dysLN

Coefficients

Model

unstandardized coefficients

standardized coefficients

t

sig

 

B

Std.Error

Beta

 

 

( constant)

0.987

2.454

 

-0.402

0.689

HFSPSTOT

0.071

0.025

0.334

2.86

0.006

Age

0.04

0.029

0.17

1.37

0.176

gender dummy

1.063

0.452

0.29

2.352

0.022

1.        Dependent variable : dysLN

Statistics

 

 

HFSPSTOT

Dyspdur

 

valid

77

68

 

missing

0

9

mean

 

19.57

194.6793

median

 

19

72

mode

 

24

336

std. Deviation

 

8.469

359.6012

Question2: What percent variance in dyspnea duration is explained by this model? (Hint: To answer this question, examine the model summary table) dyspnea in elders with heart failure?

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  • Category:- Math
  • Reference No.:- M9170170

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